mcausland



MTNESSEE (No Model.) 2 Sheets-Sheet 1..

W. MCAUSLAND. DEVICE ECE CTAMEINC CE SEAPINC METALLIC ARTICLES.

l190,594,960l Patented DeC.7, 1897.

(No Model.) 2 sheets-sheen 2.

W MoAU ND. DEVICE EOE STAMPING 0E SE G METALLIC ARTICLES... No. 594,960.Patented Deo. 7', 1897.-

I 51111." "I Q 1 5,

UNITED STATES PATENT OEETCE.

VILLIAM MCAUSLAND, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE REED &BARTON CORPORATION, OF SAME PLACE.

DEVICE FOR STAM PING OR 'SHAPING METALLIC ARTICLES.

SPECIFICATION forming part of Letters Patent No. 594,960, dated December7, 1897.

Application filed April 30, 1897.

To a/ZZ whom it may concern:

' Be it known that I, WILLIAM MO AUSLAND, a citizen of the UnitedStates, residing at Taunton, in the county of Bristol and Oommonwealthof Massachusetts, have invented a new and useful Improvement in Devicesfor Stamping or Shaping Metallic Articles, of which the following is afull specification.

My invention relates to the manufacture of hollow metallic articleswhich are stamped or formed up from sheet metal; and it consists in anew and improved device hereinafter described in detail whereby theresult is accomplished in a cheap and expeditious manner.

Heretofore in the manufacture of hollow articles from sheet metal theresult has been accomplished only after subjecting the blank to a numberof operations, each operation or course bringing the article a littlenearer to the form desired. Each of these courses requires a piece A andpiece B, and each course requires one or more blows, one to form theblank and the others to smooth the ange of the blank, which is crimped'or puckered by the first blow. It has been also necessary to anneal theblank after each course. It will be seenv that when the article formedhas any depth the processis a laborious and expensive one. With mydevice it is possible to form up an article with but one piece A, ashereinafter described.

Referring to the accompanying drawings, Figure l shows in verticalsection my device with the blank held in the piece A before being struckthe first blow. Fig. 2 shows the same parts after the first blow hasbeen struck and the piece B withdrawn. Fig. 3 shows the blank in thepiece A before being struck the second time, and also the piece B2, allin vertical section. Fig. 4 shows the same parts as Fig. 3 after thesecond blowhas been struck. Fig. 5 is a perspective view of piece E.Fig. 6 is a perspective View of piece C, which I preferably makewith itscenter to conform in shape to the pieceto be produced. Fig. 7 is avertical section of piece E. Fig. 8 is the same as Fig. 1 except thatanother method of securing together the pieces A and C is shown.

In the drawings the piece A is suitably held on the bed of a drop orother press. The pieces B and B2, which are respectively for block- Ythesides.

serai No. 634,620. (No more.)

ing and finishing, are suitably attached to the piece B of the press. v

The pieces B and B2 are preferably mad of soft metal suitably shaped tothe piece A. The piece B fits the die only at and nearthe bottom,leaving considerable space around The finishing-piece B2 is made to tthe face and cavity of the piece A accurately, as shown in Fig. 4, sothat anything placed in the piece A will be forced into every part ofit.

The blank S is held in position on the piece A by the piece C. (Shown inFigs. l and 6.) This is held firmly by the piecesD D, which have intheir upper ends the pieces d cl and whose lower ends engage with thehole or annular slot a of the piece A, so that they can be readilyadjusted or removed. The piece C may also be screwed to the piece A, asshown in Fig. 8, by providing it with the downwardly-projectinginternally-threaded flange c, which engages with an external thread a2on the outside of the'piece A. This piece C serves to hold the metal andkeep its outer edge from puckering as it is drawn over the edge of thedie. By this application of the piece O to an irregular-shaped piece A,I avoid the necessity of fiattening the flange of the blank after thefirst blow has been struck, which would harden the iange and necessitateannealing.

Resting on the face of the piece A, I place before the first or blockingblow the piece E, upon which the blank S rests, the whole being clampedtogether by a clamp or other suitable device. The piece E lies aroundthe opening of the piece A and has its inner lip e turned down so thatit projects slightly into the opening, as shown in the drawings, theinwardly-turned lip c of thepiece E fitting accurately into the piece Aall around the edge. This piece E is an important feature of my device,as it presents a smooth rounding edge over which the metal of the blankcan be drawn without straining it, as would be the case if it were drawnover' the edge 0.3 of the piece A, which is necessarily made sharp inorder that the finished article may have a sharp corner s between itsbody and fiange after it has been driven home in the piece A by thepiece B2. The piece E also allows the IOO blank S to be forced into thepiece A by the first blow, as shown in Fig. 2, which shows the blockingforce Withdrawn after the first blow. It Will be seen that the blanktouches the piece A only at and near its bottom, but on account of thethickness of metal in the piece E it does not fill the upper part of thepiece A. This is better illustrated in 3, which shows the blank in thepiece A after the piece E and piece G have been removed, Which is theposition it is in before being struck by the piece B2.

As described, the finishing force lits the face and cavity of the pieceA accurately, so that it forces the blank into the piece A, pressing itinto its remotest corners or irregularities and also smoothing out anyirregularities or flutings which the blank may have in consequence ofthe iirst bloW. This result is made possible by the fact that the blankdoes not completely fill the piece A after the first blow, ashereinbefore described. The iinishing force also leaves the corner ssharp, so

that the iiange can be trimmed oi, as is usually done.

What I claim isl. A device for shaping hollow'rnetallic articles fromsheet metal, consisting of the pieces A, E, and C rigidly connectedtogether in combination with the piece B, all arranged and operatedsubstantially as described.

2. In a device for shaping hollow metallic articles from sheet metal, apiece A and a piece C in combination with a piece E rigidly held betweenthe pieces Aan'd C, all arranged substantially as described.

3. In a device for shaping ,holloWmetallic articles from sheet metal, adie provided with a piece E having its inner edge rounded oversubstantially as shown and described.

In Witness whereof I have hereunto set my hand.

VILLIAM MCAUSLAND.

Vitnesses:

LEWIS A. HoDGEs, F. L. FISH.

